*{
    padding:0;
}

.content{
    width:500px;
    height:600px;
    margin:0 auto;
    /*border:1px solid red;*/
    text-align: center;
}
#table{
    /*display:block;*/
    border-collapse:collapse;
    border:1px solid gray;
}
#table th{
    border:1px solid gray;
    width:80px;
    height:30px;
}

#table td{
    border:1px solid gray;
    width:80px;
    height:30px;
}
.DownDiv{
     position:absolute;
    top:17px;
    display: inline-block;
    border-top:6px solid white;
    border-left:5px solid transparent;
    border-right:5px solid transparent;
    border-bottom:5px solid transparent;
    float:right;
    margin-left:4px;
    cursor:pointer;
}
.UpDiv{
    position:absolute;
    top:3px;
    display: inline-block;
    border-bottom:6px solid white;
    border-left:5px solid transparent;
    border-right:5px solid transparent;
    border-top:5px solid transparent;
    margin-left:4px;
    float:right;
    cursor:pointer;
}